Ah cant find the right type of lens online.Local bike shop, motorbike shop, snowboard place etc.
http://www.tbsm.com.au Pretty sure they have them online. They have them instore anyway
its only free shipping to the US, and the postage is $31 but ill have a look around at bike shops first.try you local bike store or http://www.tactics.com/replacement-lenses
they are in USA but free shipping